128 lines
3.1 KiB
Go
128 lines
3.1 KiB
Go
// Copyright 2022 PingCAP, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package core_test
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import (
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"context"
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"testing"
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"github.com/pingcap/tidb/parser"
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"github.com/pingcap/tidb/planner/core"
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"github.com/pingcap/tidb/testkit"
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"github.com/pingcap/tidb/util/hint"
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"github.com/stretchr/testify/require"
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)
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func TestPlanStringer(t *testing.T) {
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store := testkit.CreateMockStore(t)
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tk := testkit.NewTestKit(t, store)
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tk.MustExec("use test")
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tk.MustExec("create table t(a int, b int, c int, index idx(a))")
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tests := []struct {
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sql string
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plan string
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}{
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{
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sql: "show columns from t like 'a'",
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plan: "Show(field:[a])",
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},
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{
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sql: "show columns from t like 'a%'",
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plan: "Show(field_pattern:[a%])",
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},
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{
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sql: "show columns from t where field = 'a'",
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plan: "Show->Sel([eq(Column#13, a)])->Projection",
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},
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{
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sql: "desc t",
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plan: "Show",
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},
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{
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sql: "desc t a",
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plan: "Show(field:[a])",
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},
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{
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sql: "show tables in test like 't'",
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plan: "Show(table:[t])",
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},
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{
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sql: "show tables in test like 'T'",
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plan: "Show(table:[t])",
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},
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{
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sql: "show tables in test like 't%'",
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plan: "Show(table_pattern:[t%])",
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},
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{
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sql: "show tables in test like '%T%'",
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plan: "Show(table_pattern:[%t%])",
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},
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{
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sql: "show databases like 't'",
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plan: "Show(database:[t])",
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},
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{
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sql: "show databases like 'T'",
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plan: "Show(database:[t])",
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},
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{
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sql: "show databases like 't%'",
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plan: "Show(database_pattern:[t%])",
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},
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{
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sql: "show databases like '%T%'",
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plan: "Show(database_pattern:[%t%])",
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},
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{
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sql: "show table status in test like 'T%'",
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plan: "Show(table_pattern:[t%])",
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},
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{
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sql: "show table status in test like '%T%'",
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plan: "Show(table_pattern:[%t%])",
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},
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{
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sql: "show collation like 't'",
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plan: "Show(collation:[t])",
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},
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{
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sql: "show collation like 'T'",
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plan: "Show(collation:[t])",
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},
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{
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sql: "show collation like 't%'",
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plan: "Show(collation_pattern:[t%])",
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},
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{
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sql: "show collation like '%T%'",
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plan: "Show(collation_pattern:[%t%])",
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},
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}
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parser := parser.New()
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for _, tt := range tests {
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stmt, err := parser.ParseOneStmt(tt.sql, "", "")
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require.NoError(t, err, "for %s", tt.sql)
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ret := &core.PreprocessorReturn{}
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builder, _ := core.NewPlanBuilder().Init(tk.Session(), ret.InfoSchema, &hint.BlockHintProcessor{})
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p, err := builder.Build(context.TODO(), stmt)
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require.NoError(t, err, "for %s", tt.sql)
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p, err = core.LogicalOptimize(context.TODO(), builder.GetOptFlag(), p.(core.LogicalPlan))
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require.NoError(t, err, "for %s", tt.sql)
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require.Equal(t, tt.plan, core.ToString(p))
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}
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}
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